improper

adj

1. incorrect, false, erroneous, mistaken, wrong; inexact, inaccurate, faulty, amiss, off base, off the mark; unsound, untrue, inapplicable.

2. unseemly, unbecoming, indecorous; unladylike, ungentlemanly, ungenteel, impolite; undignified, unrefined, unpolished, inelegant, indelicate; impolitic, imprudent, indiscreet, tactless, injudicious; untoward, Inf. out-of-the-way, Inf. off-key, out-of-bounds, out-of-line, out-of-order.

3. indecent, risque, off-color; offensive, obscene, lewd, smutty; immoral, corrupt, sinful, wicked, reprehensible; illicit, illegitimate, unlawful.

4. inappropriate, inapt, inapposite, unmeet, unfitting, unbefitting; unwarranted, uncalled-for, out of place, out of keeping; inopportune, ill-timed, unseasonable, untimely, infelicitous; unfavorable, incommodious, inconvenient, uncongenial, unlikely; unsuitable, unsuited, unfit, ill-adapted, incompatible; inexpedient, inadvisable, impractical, inapplicable, unfeasible.

5. abnormal, irregular, unusual.